Registration Dossier
Registration Dossier
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EC number: 947-805-1 | CAS number: 213077-23-7
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 992
- Report date:
- 1992
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.5 (Degradation: Biochemical Oxygen Demand)
- Version / remarks:
- 84/449/EEC C.5
Biotic degradation: modified Sturm test - Deviations:
- yes
- Remarks:
- 1.5 L vessels rather than 3 L vessels
- GLP compliance:
- yes
Test material
- Reference substance name:
- Didodecyl nonylphenyl phosphite
- EC Number:
- 252-457-2
- EC Name:
- Didodecyl nonylphenyl phosphite
- Cas Number:
- 35239-35-1
- Molecular formula:
- C39-H73-O3-P
- IUPAC Name:
- Phosphorous acid, didodecyl nonylphenyl ester
- Reference substance name:
- Dodecyl bis(4-nonylphenyl) phosphite
- EC Number:
- 284-117-4
- EC Name:
- Dodecyl bis(4-nonylphenyl) phosphite
- Cas Number:
- 84787-76-8
- Molecular formula:
- C42-H71-O3-P
- IUPAC Name:
- Phosphorous acid, dodecyl bis(4-nonylphenyl) ester
- Reference substance name:
- 4-nonylphenyl ditridecyl phosphite
- EC Number:
- 284-119-5
- EC Name:
- 4-nonylphenyl ditridecyl phosphite
- Cas Number:
- 84787-77-9
- Molecular formula:
- C41-H77-O3-P
- IUPAC Name:
- Phosphorous acid, 4-nonylphenyl ditridecyl ester
- Reference substance name:
- Bis(4-nonylphenyl) tridecyl phosphite
- EC Number:
- 284-120-0
- EC Name:
- Bis(4-nonylphenyl) tridecyl phosphite
- Cas Number:
- 84787-78-0
- Molecular formula:
- C43-H73-O3-P
- IUPAC Name:
- Phosphorous acid, bis(4-nonylphenyl) tridecyl ester
- Reference substance name:
- Tris(nonylphenyl) phosphite
- EC Number:
- 247-759-6
- EC Name:
- Tris(nonylphenyl) phosphite
- Cas Number:
- 26523-78-4
- IUPAC Name:
- tris(2-nonylphenyl) phosphite
- Reference substance name:
- Didodecyl phosphonate
- EC Number:
- 244-325-8
- EC Name:
- Didodecyl phosphonate
- Cas Number:
- 21302-09-0
- Molecular formula:
- C24H51O3P
- IUPAC Name:
- Di(n-dodecyl)hydrogen phosphate
- Reference substance name:
- Phenol, 4-nonyl-, branched
- EC Number:
- 284-325-5
- EC Name:
- Phenol, 4-nonyl-, branched
- Cas Number:
- 84852-15-3
- Molecular formula:
- C15H24O
- IUPAC Name:
- 4-Nonylphenol, branched
- Test material form:
- liquid
Constituent 1
Constituent 2
Constituent 3
Constituent 4
impurity 1
impurity 2
impurity 3
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Bacteria collected from activated sludge of the sewage treatment plant of CH-4153 Reinach on 03/08/92. The pH after collection was 7.1 .
- Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 12.4 mg/L
- Based on:
- test mat.
- Initial conc.:
- 22.4 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- Vessels : 2 Liter flasks (dark brown glass), equipped with gas inlet and magnetic stirrer
Temperature: 22 +/- 2 degrees C
Duration: 28 days
Air: 25 ml/min purified from carbon dioxide.
Reference substance
- Reference substance:
- other: not specified but performed as expected
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 25
- Sampling time:
- 28 d
- Details on results:
- Theorteical CO2 pased on 12.4 mg/1 = 51.41 mg CO2/I.5 liter
Applicant's summary and conclusion
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- There was 25% degradation after 28-days. After an inital lag in degradation, there was significant degradation during the final week of the study suggesting the test material would have continued to degrade.
- Executive summary:
There was 25% degradation after 28-days. After an inital lag in biodegradation, there was significant biodegradation during the final week of the study suggesting the test material would have continued to degrade.
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